Measles symptoms start with a high fever, which develops about 10 days after exposure. This is followed by one or more of the following: a runny nose, cough, red eyes and small white spots inside the mouth. A red blotchy rash on the neck and face appears three or four days later before spreading to the rest of the body.

"Auckland's last major measles outbreak in 2011 demonstrates how quickly the disease can spread: one infected child resulted in nearly 500 cases and 80 hospital admissions," Jackson said.

"If you have measles symptoms or any concerns, phone your GP or Healthline on 0800 611 116. If you need to see a doctor it is important to call first to avoid spreading measles in the waiting room."